curl --request POST \
  --url https://rcur.app/api/v2/customers \
  --header 'Content-Type: application/json' \
  --data '
{
  "first_name": "John",
  "last_name": "Doe",
  "email": "john@example.com",
  "number": "CUST-001",
  "organization_name": "Acme B.V.",
  "phone": "+31612345678",
  "address": "Keizersgracht 1",
  "postal_code": "1015AA",
  "city": "Amsterdam",
  "country": "NL",
  "vat_number": "NL123456789B01",
  "locale": "nl"
}
'

import requests

url = "https://rcur.app/api/v2/customers"

payload = {
    "first_name": "John",
    "last_name": "Doe",
    "email": "john@example.com",
    "number": "CUST-001",
    "organization_name": "Acme B.V.",
    "phone": "+31612345678",
    "address": "Keizersgracht 1",
    "postal_code": "1015AA",
    "city": "Amsterdam",
    "country": "NL",
    "vat_number": "NL123456789B01",
    "locale": "nl"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    first_name: 'John',
    last_name: 'Doe',
    email: 'john@example.com',
    number: 'CUST-001',
    organization_name: 'Acme B.V.',
    phone: '+31612345678',
    address: 'Keizersgracht 1',
    postal_code: '1015AA',
    city: 'Amsterdam',
    country: 'NL',
    vat_number: 'NL123456789B01',
    locale: 'nl'
  })
};

fetch('https://rcur.app/api/v2/customers', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://rcur.app/api/v2/customers",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'first_name' => 'John',
    'last_name' => 'Doe',
    'email' => 'john@example.com',
    'number' => 'CUST-001',
    'organization_name' => 'Acme B.V.',
    'phone' => '+31612345678',
    'address' => 'Keizersgracht 1',
    'postal_code' => '1015AA',
    'city' => 'Amsterdam',
    'country' => 'NL',
    'vat_number' => 'NL123456789B01',
    'locale' => 'nl'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://rcur.app/api/v2/customers"

	payload := strings.NewReader("{\n  \"first_name\": \"John\",\n  \"last_name\": \"Doe\",\n  \"email\": \"john@example.com\",\n  \"number\": \"CUST-001\",\n  \"organization_name\": \"Acme B.V.\",\n  \"phone\": \"+31612345678\",\n  \"address\": \"Keizersgracht 1\",\n  \"postal_code\": \"1015AA\",\n  \"city\": \"Amsterdam\",\n  \"country\": \"NL\",\n  \"vat_number\": \"NL123456789B01\",\n  \"locale\": \"nl\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://rcur.app/api/v2/customers")
  .header("Content-Type", "application/json")
  .body("{\n  \"first_name\": \"John\",\n  \"last_name\": \"Doe\",\n  \"email\": \"john@example.com\",\n  \"number\": \"CUST-001\",\n  \"organization_name\": \"Acme B.V.\",\n  \"phone\": \"+31612345678\",\n  \"address\": \"Keizersgracht 1\",\n  \"postal_code\": \"1015AA\",\n  \"city\": \"Amsterdam\",\n  \"country\": \"NL\",\n  \"vat_number\": \"NL123456789B01\",\n  \"locale\": \"nl\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://rcur.app/api/v2/customers")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"first_name\": \"John\",\n  \"last_name\": \"Doe\",\n  \"email\": \"john@example.com\",\n  \"number\": \"CUST-001\",\n  \"organization_name\": \"Acme B.V.\",\n  \"phone\": \"+31612345678\",\n  \"address\": \"Keizersgracht 1\",\n  \"postal_code\": \"1015AA\",\n  \"city\": \"Amsterdam\",\n  \"country\": \"NL\",\n  \"vat_number\": \"NL123456789B01\",\n  \"locale\": \"nl\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "abc123def456",
  "first_name": "John",
  "last_name": "Doe",
  "email": "john@example.com",
  "created_at": "2025-01-15 10:30:00",
  "number": "CUST-001",
  "phone": "+31612345678",
  "organization_name": "Acme B.V.",
  "address": "Keizersgracht 1",
  "postal_code": "1015AA",
  "city": "Amsterdam",
  "country": "NL",
  "vat_number": "NL123456789B01",
  "locale": "nl",
  "mollie_customer_id": "cst_abc123"
}

{
  "id": "abc123def456",
  "first_name": "John",
  "last_name": "Doe",
  "email": "john@example.com",
  "created_at": "2025-01-15 10:30:00",
  "number": "CUST-001",
  "phone": "+31612345678",
  "organization_name": "Acme B.V.",
  "address": "Keizersgracht 1",
  "postal_code": "1015AA",
  "city": "Amsterdam",
  "country": "NL",
  "vat_number": "NL123456789B01",
  "locale": "nl",
  "mollie_customer_id": "cst_abc123"
}

{
  "status": 422,
  "error": "Could not process request. Some fields contain invalid data",
  "fields": {
    "email": [
      "The email field is required."
    ]
  }
}